ABC Restaurant has made a forecast for last week's operations vs Actual result of the forecast last week. Period Monday Tuesday Actual 112 110 113 120 140 Forecast 115 104 110 115 135 k Wednesday Thursday Friday Using this table above, solve for Mean Absolute Deviation (MAD) Note: Round up to the last 2 decimals example 9.6568->9.66

Q: Suppose that a company makes light bulbs with a mean life of 310 hours, and a standard deviation of…

A: Given,  Mean μ = 310 Standard deviation σ = 47 Let x be hours a light bulb last

Q: Please help me please.. I promise to give feedback good. *The standard deviation of the numbers 3,…

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Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

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Q: Describe about the mean absolute deviation.

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Q: The three numbers 7,9, 14 have a sum of 30 and therefore a mean of 10. Use software to determine the…

A: In statistics, there are two types of measures namely measures of central tendency and measures of…

Q: Calculate the relative error or precision of the mean. A. 1: 100,000 B. 1: 300,000 C. 1: 200,000 D.…

A: Given, DISTANCE NO. OF MEASUREMENTS 740.53 4 740.59 3 740.57 6 740.53 7 We have to…

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

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Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: Isn't here the standard deviation equal to 4, not 2, as the tutor wrote?

A: Solution-: Given: μ=-3,σ=4 We want to find, P(0<X<2)=? Draw the picture.

Q: Explain why it makes sense that the standard deviation of X is in the denominator of the formula…

A: Standard deviation of X merely serve to scale the units of the coefficients and standard errors in…

Q: Can you find the standard deviation for sx and sy?

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Q: The mean weight of babies born in Central hospital last year was 7.2 pounds. Suppose the standard…

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Q: The average annual rainfall in a town recorded over a century is known to be 90mm with a standard…

A: Solution : Given that, The average annual rainfall in a town recorded over a century is known to be…

Q: If your 1st Term Score in this class is 38.42, and your 2nd Term Score is 43.83, what score do you…

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Q: In one sentence, please write what you understand by the term standard deviation.

A: Standard deviation is a measure of dispersion or spread of the data set relative to its mean.

Q: What percentage of days in June 2022 had rainfall exceeding 34 mm? The below questions are not…

A: The frequency distribution is,Rainfall(mm)Days10-16316-22522-281028-34634-40440-462

Q: How does the curve change when the standard deviation is the same and the mean changes?

A: The mean is the center of symmetry of a curve or normal density curve.

Q: The mean always has a z-score (value) →

A: When the data is converted into z scores, the mean will always end up being zero.

Q: Solve for the mean, variance and standard deviation

A: here given discrete probability distribution of x

Q: Using the information below, calculate the confidence interval, rounding your limits to 3 decimal…

A: In this scenario the mean difference in monthly mortgage payments to be estimated. The appropriate…

Q: Suppose the timing device used in the men’s race failed to activate at the start of the race and…

A: The data for the time recorded for 17 men is given.

Q: Find the estimated mean speed

A: Given Information: Speed (mph) Cars 30-39 7 40-49 16 50-59 51 60-69 16 70-79 10 To…

Q: It is possible to have a standard deviation of -1 for some data set? True or False

A: See the below solution

Q: Lecture(10.1a): The mean of the population is 50. The standard deviation is 10. (a) if a persons's…

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Q: What would happen to the margin of error if the standard deviation were to decrease? it would…

A: We know that ,Margin of error=critical value ×standard deviation sample sizeMargin of error =Zα2 ×σn…

Q: A data set has a mean of 70.7 and a standard deviation of 6.2. The score of 69, is how many standard…

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Q: The table below presents the actual monthly sales for a company over the first six months of 1986.…

A: The 3-month moving average is, Months Actual Sales 3-Month moving average January 1986 270…

Q: Round each z-score to the nearest hundredth. A data set has a mean of  x = 4079  and a standard…

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Q: Indicate the correct decision ("reject or "do not reject the null hypothesis), the reason for it,…

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Q: The data below gives the weights of babies (in ounces) born preterm and full-term at a local…

A: The provided pre-term weights are: 70, 74, 52, 58, 48 And the provided full-term weights are: 143,…

Q: How standard deviation affects the power?

A: With increase in standard deviation, The observed point will be located far away from the mean.…

Q: A half-century ago, the mean height of women in a particular country in their 20s was 63.1 inches.…

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Q: The number of cans of soft drinks sold in a machine each week is recorded below. Develop forecasts…

A: Data is given for sale of each week for cans of softdrinks We have to calculate mean squared error…

Q: A researcher claims that the stomachs of blue crabs from Location A contain more fish than the…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: The PRC wants to assess the difference in ratings of five different engineering board examinations.…

A: Given Data :   AE CE ECE EE ME   93 95 90 91 94   90 92 86 91 91   90 90 84 90 88   88 89…

Q: A psychologist is studying smokers' self-images, which she measures by the self-image (SI) score…

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